WO2012071595A1

WO2012071595A1 - Kickboard

Info

Publication number: WO2012071595A1
Application number: PCT/AT2011/000478
Authority: WO
Inventors: Hubert Petutschnig
Original assignee: Hubert Petutschnig
Priority date: 2010-11-29
Filing date: 2011-11-25
Publication date: 2012-06-07
Also published as: DE202011109151U1; ES2555130T3; EP2661391A1; US20130307240A1; EP2661391B1

Abstract

The invention relates to a kickboard with a frame (2, 3) comprising a footboard (1) and with two wheel units which lie at a distance from each other in the longitudinal direction of the kickboard and support the frame (2, 3) via wheel axles (25, 26, 50). According to the invention, the frame (2, 3) has a frame part (3) which branches off forwards and/or rearwards with respect to the footboard (1), preferably lies in the vertical longitudinal centre plane of the kickboard and supports at least one pivot shaft (13) which lies in the longitudinal centre plane of the kickboard, branches off from the frame part (3) at a predetermined angle (a) with respect to the standing plane (16) of the kickboard and defines a pivot axis (A, B) for the particular wheel unit (7, 8), and the particular wheel unit (7, 8) is arranged rotatably about the pivot axis (A, B) such that, when the steering column (30) and/or the footboard (1) is tilted laterally, the wheel unit (7, 8) is pivoted with respect to the longitudinal centre plane.

Description

KICK BOARD

The invention relates to a scooter according to the preamble of claim

1.

The aim of the invention is to create a structurally simple constructed scooter or scooter, which is to steer curve stable and offers great driving pleasure. Scooters are well known and are used by both adults and children for play and sports. Such scooters have a frame part to which a footboard is attached or formed. The footboard and / or the frame parts carry a front and a rear wheel unit. On the frame and / or on the footboard a steering column is attached, which is fixed to the frame part and / or the footboard and can be mounted pivotally, so that the Roiler can be folded. The steering column may be provided with a handle or a handlebar in the upper steering area. On the frame or on the footboard a front wheel unit, in particular below the steering column, mounted and with the steering column or the handle or handlebar located thereon can be brought about by turning the steering column about its axis a direction change by turning the wheels.

The aim of the invention is the creation of a scooter with a steering technique that allows a sporty driving, but with the possibility to be able to steer the scooter with one hand, so that its handling is improved. The scooter according to the invention is primarily intended to solve the problem of creating a sports device or a means of transportation which challenges the athletic character of the user, since a certain skill, in particular a higher sense of balance than in a conventional scooter is required. Furthermore, the operation or the operation should be facilitated by a simple one-hand steering with a preferably vertical steering column. Furthermore, to be made possible by special training of the storage and suspension of the wheel units better directional stability and improved handling than is possible with conventional scooters.

The invention solves this problem with the features cited in the characterizing part of claim 1. In the scooter according to the invention, comprising a frame and a frame connected to the frame or formed by the frame footboard, wherein on the frame and / or the footboard at least one wheel unit required for the directional steering is attached, it is provided that a defined left or Rechtsauslenkung the wheel unit alone by tilting the sports equipment, that is, the running board and / or possibly provided steering column can be made to the left or to the right. The wheel unit or the carrier of the wheel unit is at a tilting of the frame due to a foot movement or movement of the Steering column pivoted by the applied pressure about the pivot axis, so that the wheel unit is deflected from its straight-ahead position in a direction that is opposite to the direction of the applied pressure or the tilting movement. When tilting the frame, the tilting shaft connected to the frame is also tilted and remains in the longitudinal center plane of the scooter. The wheel axle can be rotated about the pivot axis.

It is noted here that the presence or attachment of a steering column or a handlebar is not mandatory. In itself, the scooter can be used as a sports device without steering column and be directed solely by exercising a corresponding foot pressure. However, the skill of the driver is made more demanding.

At least one wheel unit is provided, which is mounted on a support pivotable about the defined pivot axis. Advantageously, this is the front wheel unit. However, it is also possible to store the rear wheel unit or the front and the rear wheel unit on carriers deflectable or pivotable. It is envisaged that the respective wheel axle is arranged at a predetermined distance from the pivot axis and / or that is mounted or located on the pivot shaft in the plane perpendicular to the pivot axis pivotable carrier which carries the wheel axle or that the respective wheel axle in the vertically extending plane is rotatably mounted on the pivot shaft about the pivot axis and / or that when aligned for straight ahead scooter wheel axles are perpendicular to the median plane of the scooter. This achieves a light and sensitive and exactly responsive control of the scooter.

According to the invention, the rear wheel unit can be aligned like the front wheel unit or can be provided in conventional construction, comparable to a rear wheel of a conventional roller construction mounted on a rigid axle.

The tilting of the running board or the frame about the longitudinal axis of the scooter or the footboard is carried out in such a way that on the frame connected to the frame or part of the frame forming footboard by lateral deflection of the handlebar or appropriate pressure and tilting of the footboard on the Footboard tilting of the frame and the footboard is caused about the longitudinal axis of the scooter, which is achieved via the pivot shaft, a movement of the wheel axle and thus the wheel unit in the form of a pivoting to the left or right. Tilting to the right initiates a right turn and vice versa.

It is particularly advantageous if the front frame part is inclined downwards directed away from the running board and of the frame part which is the pivot axis defining pivot shaft going down in the direction of footboard. With this construction, a very sensitive reaction of the wheel units is achieved when pivoting the frame part or the tread surface by foot pressure and / or lateral pivoting of the steering column. A structurally simple construction results when the pivot axis and the frame part form an angle of 90 °. The intended wheel units may be characterized in a simple construction in that the wheel unit preferably has two wheels or a roller carrying wheel axle carried by the carrier. However, it is also possible that at least one wheel unit comprises two wheels spaced on the wheel axle and the wheel axle between the wheels is mounted on the carrier or that the carrier is designed as a fork which carries the wheel axle, wherein between the fork ends at least one wheel or a role lies. From a driving technical point of view, it can be advantageous if the wheel axle is fixed with its central region on the carrier or can be pivoted with this region around the carrier.

According to the invention it can be provided that on the frame and / or the footboard with respect to the running board upwards outgoing steering column, optionally pivotally and lockable, is attached. The scooter can thus be steered by foot pressure and / or with the steering column. An embodiment of a scooter with a steering column is advantageous for less sporty or less experienced riders.

For driving safety and operability, it is advantageous if the provided at the upper end of the handlebar handle in the direction of travel is inclined forward and / or that an actuating device for a handbrake device is provided by the steering column or attached thereto handlebar or handlebar.

A simple construction of a bearing for the pivot shaft results when the carrier has a tubular end portion or forms a bearing sleeve or recess and thus mounted on the pivot shaft and / or plugged onto the pivot shaft. It can also be provided that the pivot shaft is rod-shaped or comprises a rod-shaped end portion and is received by a pivot bearing or a rotary sleeve in the frame part.

The driving characteristics of the scooter can be influenced by providing that the wheel axle is located at a distance from the pivot shaft and / or that the wheel axle is located at the height of the running board and / or that the wheel axles are in front of and behind the running board in the direction of travel Wheel units are at the same level and / or above the level of the running board and / or that the wheel axles in straight travel of the scooter in the height range between the storage of Swivel shaft lie on the frame part and the running board. These choices give easily manageable conditions for the person driving the scooter.

A particularly stable ride is obtained when the orientation of the scooter for straight travel of the scooter, the respective wheel axle is at a higher level than the intersection of the pivot axis with the wheel axle receiving perpendicular to the pivot axis extending plane.

To improve the driving characteristics and increase driving safety can be provided that a spring unit is provided, which is attached at one end to the carrier or on the pivot shaft and with its other end to the frame and aligns the wheel axle or the wheel unit in the direction of travel for a straight ahead or presses.

It has proven to be expedient if the pivot shaft goes from the frame part to the rear in the direction of the footboard and encloses an angle with the support plane whose apex points in the direction of footboard and / or if the entire system angle (= single angle with only one steerable wheel unit or the sum of angles for two steerable wheel units) of the pivot axis (s) and / or the respective pivot shaft (s) to the contact plane between 10 ° and 90 °, preferably between 25 and 85 °, in particular between 40 and 80 °. This angular range gives good operability and manageability of the scooter especially when cornering.

An advantageous structural embodiment of the scooter is obtained if it is provided that the frame from the footboard to the front outgoing, angularly extending frame parts, wherein the footboard further lying frame part carries the pivot shaft and / or worn by at least one of these frame parts, the steering column is.

It can also be provided in an advantageous embodiment of a scooter, that the pivot shaft and the carrier are integrally formed and the pivot shaft has the shape of a mounted on the frame part and rotatable about the pivot axis fork carriage, wherein the fork region of the fork carriage in the use position when driving straight ahead or at extends in the longitudinal center plane of the scooter aligned or lying fork carriage in the direction of the footboard bent or there bent ends and the wheel axle is located in serving as a support bent end portion, and wherein the wheel axle is optionally at the level of the running board.

It is advantageous if, with the arrangement of a wheel unit mounted in front of and behind the running board and supported by a support supported by a pivot shaft, the angle of inclination of the pivot axis of the front wheel unit is advantageous is greater than the inclination angle of the pivot axis of the rear wheel unit. If the angle of the front pivot axis is greater than the angle of the rear pivot axis, the driving stability and the ease of steering are increased when cornering.

A simple structure results when the frame part is inclined at an angle to the footprint and carries in its end the pivot shaft and the carrier located thereon.

In a further embodiment of a scooter, in particular a scooter in which both the front wheel unit and the rear wheel unit is supported by a pivotally mounted about a pivot carrier, it is advantageous if the footboard at a level below a line connecting the wheel axle of the front Wheel unit with the wheel axle of the rear wheel unit is located.

In order to avoid oversteer or the driving of curves with too small radius in case of excessive lateral pivoting of the steering column or exerting too high a tilting pressure on the tread, it can be provided that the pivot angle of the wheel unit and / or the carrier to the respective Pivot axis and / or with respect to a vertical axis or the axis of the steering column of a limiting unit, eg a stop, is limited.

A simple operation of the scooter is obtained when the handlebar carries at its upper, footboard remote end a transverse handle as a holding piece for one-handed operation.

In a particularly advantageous embodiment of a scooter according to the invention it is provided that the wheel unit supporting wheel axles each comprise two wheel axles, which depart from a pivotably mounted on the pivot shaft carrier and each carrying a wheel and / or that the axles when driving straight ahead of the scooter in a Vertical plane lying perpendicular to the longitudinal direction of the scooter and the axes with the support plane at an angle of 5 ° to 40 °, preferably 10 ° to 30 °, in particular 15 ° to 25 ° include, and / or that the support points of the wheels on the Riot level lie in this vertical plane.

The aim of this advantageously designed scooter is to create a structurally simple scooter or scooter that is to steer curve stable and offers great driving pleasure and in which an undesirable tilting of the same is avoided even at higher cornering speeds.

It is envisaged that is stored or located on the pivot shaft in a vertically extending plane about the pivot axis pivotable carrier, which carries the two laterally projecting axles. When aligned for straight travel scooter, the wheel axles are preferably not perpendicular to the center plane of the scooter sticking out but have in the vertical plane at an angle upward, so that in a row two wheels of the steerable wheel unit are no longer arranged parallel to each other, but viewed from the front are comparable to the capital letter A in the upper area close to each other and are further removed in the lower area. Thus, on the one hand a light and sensitive and exactly responsive control of the scooter is achieved or on the other hand, the tilting of the wheel unit avoided at greater cornering forces, because the forces acting in cornering on the outer wheel acting forces just angled against the surface traveled, with a Wheel suspension / wheel axle closer to the scooter frame than pointing to the ground lower bearing point of a wheel (Fig.10 / Fig.12).

The rear wheel unit may be formed in such a scooter as the front wheel unit or may be provided as described above in the other embodiments, or may be formed similarly to a rear wheel of a conventional scooter structure supported on a rigid axle.

For driving safety and operability, it is advantageous if the steering column has a handle attached to its upper end which is inclined forward as seen in the direction of travel, which accommodates the natural position of the hand angled when holding the handlebar.

The driving characteristics of the scooter can be structurally influenced by the wheel axles are arranged in front of and behind the running board in the direction of travel wheel units at the same level and / or above the level of the running board.

A particularly stable ride is obtained when aligning the scooter for straight ahead of the scooter, the wheel axles are at a higher level than the intersection of the pivot axis with the wheel axle receiving perpendicular to the pivot axis extending plane.

To increase the driving safety when driving curves with too small radius at too large lateral pivoting of the steering column or exerting too much tilting pressure on the tread, it can be provided that the rotational movement of the wheel carrier on the two outer sides in the range of maximum allowable deflection is provided with a stop, so that the maximum swinging of the wheel carrier for cornering is limited to both sides and an override is avoided.

In the following the invention will be explained in more detail with reference to the drawings, for example.

Fig. 1 shows a schematic side view of a first embodiment of a scooter according to the invention. Fig. 2 shows a detail view of the front wheel unit, Fig. 3 shows a front view. Fig. 4 shows in detail an embodiment of a scooter with a wheel carrier attached to a movable pivot shaft. Fig. 8 shows a front view of scooters according to Fig. 5 to 7. Fig. 5 and 6 show in side view an embodiment of a scooter or the mounting of the pivot axis of a front wheel unit. FIGS. 7 and 8 show front views of the scooter according to FIGS. 5 and 6. FIGS. 9 and 10 show a further advantageous embodiment of a scooter. In Fig. 10 and 12, the inclined front wheels are shown in the region of the tread cross-section for simplicity round and not elliptical. 11 and 12 show two particularly preferred embodiments of a scooter.

In the drawings, the scooter is shown aligned in straight ahead, that is, the wheel axles extend in a plane perpendicular to the longitudinal center plane of the scooter and also the carrier is in this plane. The scooter is constructed symmetrically with respect to its longitudinal center plane.

Fig. 1 shows a scooter with a running board 1, which is supported by a frame or firmly connected to this or part of this frame. This frame comprises at least two frame parts 2, 3, which are connected to the footboard 1. In itself, the footboard 1 could also be mounted on the frame part 2 or formed integrally with it or even be part of the frame. The part of the frame, which is loaded by the person while driving, represents the running board. The shape of the footboard is not significant.

In the rear end region of the frame or of the running board 1, a conventional wheel 12 is mounted with a rigidly mounted wheel axle 50. This rear wheel unit 8 is mounted with the wheel axle 50 on the footboard 1 or on the frame part 2, which optionally extends through the footboard extended.

It is possible, frame parts, preferably the footboard 1 and the frame part 2, with a pivot bearing 19 and pivotally connected via a pivot pin to the scooter - as known per se - can collapse.

The frame part 2 is inclined in this embodiment in the direction of travel from the footboard 1 upwards. To the frame part 2 includes a front frame part 3, which is connected to the frame part 2, for example by welding. The frame part 3 is inclined in the direction of travel or forward and down. Of the frame parts 2 and 3, a possibly formed by a piece of pipe, connector 14 may be pivotally supported, which is connected to the steering column 30, which carries a handle 6 in its upper region.

Advantageously, in the front region of the front frame part 3 is either rigidly or rotatably mounted or fixed a pivot shaft 13, which, as shown in Fig. 2, a pivot axis A, B defines. On this pivot shaft 13, a carrier 11 is rotatably supported about the pivot axis A, B defined by it, which is the 1 000478

8th

Wheel axle 25 of the front wheel unit 7 carries. In a rotatably mounted pivot shaft 13, the carrier 11 may be fixedly connected to the pivot shaft 13.

The angle / the sum of angles of the angle α between the footprint 16 and the pivot axis A, B or the pivot shaft 13 is 10 ° to 90 °, preferably 25 to 85 °, in particular 40 to 80 °.

It is technically advantageous for driving if the front wheel unit 7 is formed by two wheels 12 arranged next to one another at a predetermined distance 18, the common wheel axle 25 of these wheels 12 being supported by the carrier 11, as shown in FIG.

The wheel axle 25 is thus seen in the direction of travel behind the pivot axis A, B, which is defined by the pivot shaft 13, which extends from the frame part 3 downwards and backwards in the direction of the footboard 1 out. In principle, the wheel axle 25 may also lie in front of the pivot axis A, B, but this position leads to a more unstable steering behavior of the scooter with a clear tendency to oversteer.

The wheel axle 25 of the wheel unit 7 lies at a distance A from the pivot axis A, B, specifically on a straight line C, D perpendicular to the pivot axis A, B, from the pivot axis A, B. This distance A is through the center of the wheel axle 25 and the point 24 where the straight line intersects the pivot axis A, B. The straight line C, D, on which the distance A lies, is perpendicular to the pivot axis A, B through the point 24 and through the wheel axis 25. The wheel axis 25 is thus in a plane which is perpendicular to the pivot axis A, B at point 24 and the straight line C, D contains and is rotatable about the pivot axis A, B. The distance A between the point 24 and the wheel axle 25 is provided and selectable to adjust the wheel unit 7 at a tilt. Thus, the wheel unit 7 can also be moved to a towed state, whereby the stability of the wheel unit 7 is ensured for a straight ahead. In principle, the wheel unit 7 could also be guided in advance.

The wheel distance MN shown in FIG. 1 of the standing on the support plane 16 wheels 12 and the inclination of the pivot axis A, B to the longitudinal axis E, F of the scooter influence the effects of lateral tilting of the steering column 30 and a treadboard 1 tilting lateral pressure in In view of the extent of pivoting of the carrier 11 about the pivot shaft 13. If the angle α is chosen to be smaller, the rolling radius increases with respect to the tilting amount about the longitudinal axis E, F and as the angle α increases, the rolling radius decreases in Relative to a tilting movement about the longitudinal axis E, F. Furthermore, an increase of the distance A between the points 24 and the wheel axle 25 on the straight line C, D in the direction D leads to an increase of the directional stability, and a reduction of the distance A leads to a Reduction of directional stability. If the wheel axle 25 exceeds the point 24 to the left in Fig. 2, the driving behavior becomes unstable. The driving stability of the scooter also improves when the longitudinal axis E, F passing through the running board 1 is at a level corresponding to the height of the wheel axle 25 or when the longitudinal axis E, F is below the level of the wheel axle 25.

The steering of the scooter is essentially based on the fact that the front and rear wheel unit 7, 8 along the longitudinal center or symmetry plane of the scooter are arranged in particular centrally and in alignment, and that by a lateral tilting of the tread 1 and the steering column 30 with respect to the Longitudinal axis E, F and the pivot shaft from the central, vertical position is tilted in a direction corresponding to the tilting opposite direction. If, for example, the steering column 30 is tilted to the right with respect to the longitudinal axis E, F, the point 28 on the pivot shaft 13 moves to the left. Furthermore, the wheel unit 7 is rotated in the same direction of the tilting movement of the steering column 30 and the running board 1 to the right by the resulting lever between the point 24 and the support point of the wheel 12 on the support plane 16. In this case, the freely rotatable wheel unit follows the direction of the deflected pivot shaft necessarily against the constant constant position of the footprint against the wheel unit with the force of the force acting on the scooter from above weight. This rotation is the stronger, the greater the angle α is selected. The deflection of the wheel unit 7 as a result of tilting of the steering column 30 or the tread 1 then takes place in sufficient form when, as shown in Fig. 3, the distance 18 between the two wheels 12 is so large that the force required for the deflection or turning the wheel unit 7 can be constructed. This means that as the angle α is increased, the steering force increases and, as a result, the distance 18 between the two wheels 12 has to be correspondingly greater.

The required size of the wheelbase 18 also depends on the constructively required range of motion of the pressure point or point of application of the tilting force on the pivot axis 13. If this point is adjusted outside of the respective parallel planes defined by the wheels 12 of the wheel unit 7 or if this point is at a distance from the longitudinal center plane of the roller which is greater than the distance 18, the steering system tilts. The wheel unit lays across and there is a total failure of the steering.

In an advantageous embodiment it can be provided that the wheel unit 7 comprises a fork carriage which carries the wheel axle 25. The wheels 12 are arranged side by side or equidistant with respect to the distanced wheels combined into a roller and lie between the forks of the fork carriage. Of the Fork carrier is attached to an extension on the carrier 1 1 or serving as a carrier extension is optionally pivotally mounted on the pivot shaft 13 or plugged or plugged.

It is advantageous if the wheel unit 7 is formed by two wheels 12, which are located at a distance 18 from each other. The rear wheel is unguided or rigidly mounted on the wheel axle 50 in the embodiment according to FIGS. 1 to 4, but can in principle also be formed in this and all other embodiments as a steering wheel unit as well as the front wheel unit.

In practice, it has been found that in one embodiment of a scooter, as described in FIGS. 1 to 3, an angle α of 30 to 40 ° leads to larger rolling radii and, moreover, to a more stable directional running behavior, as compared with FIG Angle α of, for example, 70 to 80 °, if one chooses in both cases, the lateral tilting of the steering column 30 and the footboard 1 equal. The smaller the angle α is selected by design, the greater the minimum rolling radius at the same steering deflection of the handlebar.

When driving the driver of the scooter stands with one leg on the tread 1 of the scooter and holds with one hand, the handle 6 of the steering column 30 and goes straight in the balanced state. A turn can be initiated by pivoting the steering column 30 to one side without requiring a change in center of gravity. A cornering is achieved by pivoting the tread surface 1 or the frame parts 2, 3 about the longitudinal axis E, F and thereby necessarily deflecting the front wheel unit 7 and possibly also a rear wheel unit 8 about the respective pivot axis A, B. Only when the scooter turns into a corresponding rolling radius, the driver takes an inclined position proportional to the angular velocity, which is directed towards the center of the curve.

In the embodiment of a scooter according to the invention shown in FIG. 4, the frame part 2 starts from the running board 1 and merges into the frame part 3. The frame part 3 carries a rotary sleeve 4, in which the pivot shaft 13 is rotatably mounted. The pivot shaft 13 is integrally formed with the carrier 1 in this embodiment. The pivot shaft 13 defines the pivot axis A, B, about which the carrier 11 is pivotable. The carrier 11 carries the wheel axle 25, on which a roller or at least one wheel 12, advantageously two wheels 12, which enclose the carrier 11 between them, are rotatably mounted.

In the transition region of the frame part 2 in the frame part 3, a pivot bearing 19 is formed, in which the steering column 30 is articulated. The steering column 30 is received by a connecting piece 14 which has a recess 15 in which a Locking pin 17 is adjustably mounted against spring action, which latching pin 17 can be received by a latching recess 20 which is formed in an arcuately shaped curved path 38. With appropriate actuation of the locking pin 17, the steering column 30 can be adjusted in the direction of arrow 33 in the dashed position and fixed there.

The wheel axle 25 is located at the level of the tread surface 1 and is opposite to the direction of travel offset behind the pivot axis A, B. The wheel axle 25 may be higher or lower as in all embodiments. The pivot axis A, B is inclined at an angle α to the support plane 16.

Also in this embodiment of a scooter, the front wheel unit 7 is not connected to the steering column 30, but is supported by the frame, that is, by the frame part 3. As with all embodiments, it is also possible in this embodiment to pivotally arrange the rear wheel unit 8 about a pivot shaft 13, e.g. Also, a pivot shaft, as used for the front wheel unit 7.

The sleeve 4 is fixedly and rigidly mounted in the front frame part 3 and extends at an angle α to the contact plane 16.

The positioning of the pivot shaft 13 in the rotary sleeve 4 is performed by a fuse 29, such as a snap ring, and the support of the carrier 11 is carried out, for example, by an angular contact ball bearing as a support surface 40 in the form of on the rotary sleeve.

In Fig. 4 is a generally usable example of a provision of the wheel unit 7 is shown in the straight-ahead position of the scooter. 57 denotes a bent extension of the pivot shaft 13. The end of this extension 57 is connected via a tension spring 58 to the frame part 3 or the cam track 38. In a rotation of the pivot shaft 13 about the pivot axis A, B, the extension 57 is pivoted against the action of the spring 58 and withdrawn from this to its original position in the longitudinal center plane of the scooter.

In general, and also in this embodiment, it is possible to form the rear wheel unit 8 in the same way as the front wheel unit 7. In these cases, the tread surface 1 is extended by a frame part corresponding to the frame part 3, which with a pivot shaft 13, the rear wheel unit. 7 wearing.

It is advantageous if the pivot angle of the pivot shaft 13 and / or the carrier 11 is limited by a limit to a predetermined range with respect to a vertical to the support plane 16, so that the curves to be traveled with the scooter are limited to a certain minimum radius.

In an embodiment of a roller according to the invention shown in FIGS. 5 and 6, the frame part 3 carries a pivot shaft 13, which is pivotably mounted on or in a bearing 52 carried by the frame part 3. The pivot shaft 13 is mounted rotatably about the pivot axis A, B. The frame part 3 remote end portion of the pivot shaft 13 is formed bent and forms the carrier 11 for the wheel axle 25 from. It may be a fork carriage, as it is designated in Fig. 7 with 53 and the wheels 12 includes from the side. However, it is also possible to form the carrier 11 as shown in Fig. 8.

The carrier 11 carries the wheel axle 25 at a level of the footboard 1. As such, the wheel axle 25 may also be above or below this level. Further, when driving straight ahead, the wheel axle 25 on the support 1 at a normal distance A behind and above the pivot axis A, B. Advantageously, be provided in this embodiment or in the embodiments described above, that the wheel axle 25 of the front wheel unit 7 below the upright Asked steering column 30 is disposed or below the attachment point of the steering column 30 on the frame part 3 and / or frame part 2 is located. In such a situation, a rapid adjustment of the wheel unit 7 is achieved in a lateral tilting of the steering column 30 and the tread surface 1.

Also in the embodiment according to FIG. 6, the bearing area of the pivot shaft 13 lies in front of the articulation point of the steering column 30 on the frame part 3 or on the frame part 2. Such a mounting of the pivot shaft 13 on the front frame part 3 can also be used in the previously described embodiments of scooters according to the invention be provided.

In general, it is possible to limit the pivot angle of the carrier 11 about the pivot axis A, B or about the pivot shaft 13 by means of stops.

Generally, the ground clearance of the steering handle or the handlebar 6 is about 850 to 1000 mm, wherein the wheel distance MN between the front and the rear wheel unit 7, 8 is about 550 to 750 mm.

Furthermore, the wheel unit 7 is formed throughout or usually by two wheels 12.

In the embodiment according to FIG. 6, it is advantageous that the carrier 11 is mounted as an extension of the pivot axis 13 freely pivotable about the pivot axis A, B. It can also be provided that the carrier 11 representing part of the pivot shaft 13 is placed on the pivot shaft 13 and its free end and there, for example. with a screw, is set.

Also in this embodiment, the wheel units 7 and 8 may preferably comprise two or more wheels or even a roller.

Quite generally and also here spring units can be provided, with which the carrier 11 and the wheel units 7, 8 biased for straight ahead driving or pushed into a neutral position for straight ahead or adjusted. The angle α is in the embodiment of Figure 6 20 to 60 °, preferably 30 to 50 °, and is preferably about 45 °. The wheel axle 25 is in straight travel in the area between the pivot axis A, B and the footboard. 1

In general, and as in the previously discussed embodiments, also in a scooter, as shown in Figs. 9 and 10, the steering column 30 may be formed in two parts and the handlebar or handle 6 may be carried by a handlebar 31, which in the steering column 30 is inserted.

Fig. 7 and 8 show in all embodiments usable, each equipped with two wheels, differently constructed wheel units 7 and 8, in which the carrier 11 is disposed either between two wheels 12 or is formed as a fork carriage 53, that of a spacer 46th held at a distance wheels 12 or possibly even a role.

Generally speaking, the wheels 12 can either be freely rotatably mounted on the wheel axles 25 or the wheels 12 can be firmly connected to the wheel axles 25, in which case the wheel axles 25 are rotatably mounted in bearings in the respective carrier 11.

In principle it can be provided that the wheel units 7, 8 or the carrier 11 are rotatably mounted at an angle of 360 ° about the pivot axis A, B. However, in order to achieve a stabilization of the scooter, this angle is advantageously limited to attacks on a predetermined angular range.

In general, it should be noted that the footboard 1 can be formed by a widened frame part 2 and depending on the respective frame and footboard construction may have different position, shape and structure.

It has been found that it is advantageous if the wheel units 7, 8, but in particular the front wheel unit, are each formed by two spaced-apart wheels.

It is possible to combine two of the illustrated and described different embodiments of pivot shafts 13 with carrier 11 and wheel units 7, 8 on a scooter, without loss of stability or handling.

In no embodiment of the scooters according to the invention, the wheel units 7, 8 with a handlebar or column 30 directly steerable or adjustable. The deflection or steering of the wheel units 7, 8 takes place exclusively by lateral tilting of the steering column 30 and / or the footboard 1.

The angle α of the pivot axis A, B to the footprint is then measured when the respective wheel unit 7, 8 is aligned in the direction of travel or for straight ahead driving or the scooter stands upright on the footprint 16. The pivot shaft 13 and the carrier 11 are in this position in the longitudinal center plane of the scooter, the wheel axles 25 are in the horizontal direction perpendicular to the longitudinal center plane. The steering column 30 is in operation tipping and schwenktest with the frame parts 2 and / or 3 and / or the footboard 1 connected. The running board can be flat or curved.

The pivot shaft 13 and / or the carrier 11 pivot or rotate about the defined pivot axis A, B when tilting the steering column 30 or the footboard 1. This is especially true when the carrier 11 and the pivot shaft 13 are firmly connected. When the carrier 11 is pivotally mounted on or about the pivot shaft 13, the pivot axis A, B passes through the pivot shaft 13. Are the pivot shaft 13 and the carrier 11 firmly connected, the pivot axis A, B defined by the axis to the rotation or pivoting of the carrier 11 takes place upon rotation of the pivot shaft 13.

From the running board 1 can go off to the front and / or to the rear of a bend, which replaces the frame parts 2, 3.

The wheel axle 25 runs perpendicular to the longitudinal center plane of the scooter. The wheels 12 are at a distance 18 to the longitudinal center plane.

In the treadboard near end portion of the pivot shaft and / or in the footboard remote end portion of the pivot shaft 13 may be formed means for limiting the angle of rotation S of the pivot shaft and / or the carrier.

In principle, a unit for limiting the pivoting path could also have stops provided on the running board, which are designed in the form of projections and extend upward or downward from the running board 1, against which projections the side surfaces 65 of the carrier 11 and / or the pivot shaft 13 can be applied , The stop surfaces can be provided with elastic damping stops.

Fig. 9 shows a scooter in side elevation and Fig. 10 shows a front view of a wheel unit. Fig. 9 shows a scooter, which is constructed in principle the same as the previously described scooter and their features - as far as they are compatible - may have. The scooter comprises a footboard 1, which is supported by a frame 2 or firmly connected to this part of this frame. This frame 2 comprises the footboard 1 and a frame part 3, and a part 30. In itself, the footboard 1 could also be mounted on the frame part 2 or integrally formed therewith. The part of the frame, which is loaded when driving by the person, also here is the footboard 1. How the footboard 1 is designed in form, is not significant.

In the rear end region of the frame or the footboard 1, a conventional wheel 8 is mounted on the frame part 3 with a rigidly mounted wheel axle 50. This rear wheel unit 8 is mounted with the wheel axle 50 on the running board 1 or on the fork-shaped rear frame part 3 or on the frame part 2, which extends optionally extended by the running board 1. It is possible to pivotally connect the frame part 30 with the running board 1 and the frame part 2 with a pivot bearing 38 or via a pivot pin 19 in order to be able to fold the scooter together, as is known per se.

The frame part 30 is inclined in this embodiment in the direction of travel from the footboard 1 upwards. The frame part 30 is adjoined by a front frame part 30 ', which is connected to the frame part 30, for example by welding. The frame part 30 'is extended in the extension of the steering column 31 down or carries the steering column 31, wherein the steering column 31 may be formed as a telescopic steering column with the sections 30' and 31 and carries a handle 6 in its upper region.

The footboard 1 has on its front side in the direction of travel the frame part 2, which carries in its front region, the angularly projecting pivot shaft 13. On this pivot shaft 13, a support 11 is rotatably supported about the pivot axis A, B defined by it, which carries the wheel axles 25, 26 of the front wheel unit 7. In a pivotally mounted in the frame part 2 pivot shaft 13, the carrier 11 may be fixedly connected to the pivot shaft 13.

The angle α between the footprint 16 and the pivot axis A, B or the pivot shaft 13 is 10 ° to 90 °, preferably 25 to 85 °, in particular 40 to 75 ° at 1 steerable wheel unit, or as an angle total with 2 steerable wheel units.

The wheel axle carrier 1 of the wheel unit 7 according to FIG. 10 has the two wheel axles 25 and 26 preferably formed by axle bolts which project angularly upward, the axle pin 25 occupying an angle to the contact surface 16 between the contact surface 16 and the plane ST on the one hand and the axis or straight line OP on the other hand, or the axle 26 includes an angle with the plane ST and the straight line QR. The angles are the same size. A vertical plane to the axle pin 25 has a straight line KL, for the axle 26 results as a track of such a plane straight line MN.

Fig. 10 further shows a visible shaft portion of the pivot shaft 13 about which the wheel 11 is rotatably mounted. The two upwardly projecting axle bolts 25 and 26 are in exact straight ahead driving exactly on a direction transverse to the direction plane, wherein the plane is perpendicular to the longitudinal axis EF and normal to the footprint 16 and the vertical axis CD contains or a parallel plane represents, which viewed in the direction of travel, can be further or further back from design requirements. The pivot shaft 13 and the pivot axis AB are in straight travel in the longitudinal center plane of the scooter, in which the lines CD and EF are.

Both wheel planes NM and KL are parallel to the longitudinal axis EF of the scooter. The intersection of the wheel planes runs parallel to the longitudinal axis EF of the scooter. The Longitudinal axis EF runs in the vertical longitudinal center plane of the scooter parallel to the contact plane or to the bottom 16.

It is technically in terms of cornering stability of particular advantage when the front wheel unit 7 is formed by two mutually opposite wheels 12a, 12b, the two axle bolts 25 and 26 of these wheels 12a, 12b are supported by the carrier 1 1, such as in Fig. 10 is shown.

The wheel spacing 16a / 16c of the wheels 12 and 8 standing on the support plane 16 and the inclination of the pivot axis A, B to the longitudinal axis E, F of the roller, which is parallel to the support surface, influence the effects of a lateral tilting of the steering column 30731 or one the treadboard 1 tilting lateral pressure with respect to the extent of pivoting of the carrier 11 about the pivot shaft 13. If the angle α is chosen smaller, the rolling radius increases in relation to the Kippgröße about the longitudinal axis E, F and when the angle α greater The rolling stability of the scooter is also improved when the running on the running board 1 surface or tread surface is below the front and rear axles connecting longitudinal axis EF.

The steering of the scooter is essentially based on the fact that the front and rear wheel units 7, 8 are arranged along the middle longitudinal plane or symmetry plane of the scooter, in particular centrally and in alignment and / or symmetrically thereto, and that by a lateral tilting of the tread surface 1 resp of the steering column 30 with respect to the longitudinal axis E, F and the pivot shaft 13 is tilted from the central, vertical position in a direction opposite to the tilting opposite direction. If, for example, the steering column 30 is tilted to the right with respect to the longitudinal axis E, F, the point 28 on the pivot shaft 13 moves to the left. Furthermore, the wheel unit 7 in the same direction of the tilting movement of the steering column 30 and the running board 1 is rotated to the right by the resulting lever between the attacking in the system pressure point and the support point of the wheel 12 on the support level 16. This rotation is analogous all the more, the greater structurally the angle α has been selected. The deflection of the wheel unit 7 as a result of tilting of the steering column 30 or the tread 1 then takes place in sufficient form when, as shown in Fig. 10, the distance between the two wheels 12a and 12b is so large that the force required for the Deflection or rotation of the wheel unit 7 can be constructed.

It is envisaged that the two wheels 12a, 12b of the wheel unit 7, 8 in the installed position with their upper edge regions are closer to each other, so that the transmitted from the wheel axles via the wheels forces obliquely outwards against the Supervision level are passed and / or that the Radachsenbolzen the wheels 12a, 12b of the wheel unit 7 in mounting position closer to the vertical longitudinal center plane of the scooter as the support points 16a, 17a of the wheels 12a, 12b on the ground or on the support level 16 and / or in that the wheel bolted connections of the wheel axles 25, 26 of the wheel unit 7 designed as axle bolts do not protrude beyond the bearing points 16a, 7a of the wheels 12a, 12b even at the smallest bend radius that can be driven in terms of construction technology.

As the angle α increases, the steering force increases, as does the tendency for the control to become unstable, and as a result, the distance of the contact points 16a, 17a between the two wheels 12a, 12b must be correspondingly greater. The required width of this wheelbase also depends on the design centrifugal forces for the smallest to be driven curve radii at the maximum permissible speeds.

When driving the driver of the scooter stands with one leg on the tread 1 of the scooter and holds with one hand, the handle 6 of the steering column 30 and goes straight in the balanced state. A turn can be initiated by pivoting the steering column 30 to one side without requiring a change in center of gravity. A cornering is achieved by pivoting the tread surface 1 or the frame parts 2, 3 about the longitudinal axis E, F and thereby necessarily deflecting the front wheel unit 7 and possibly also a rear wheel unit 8 about the respective pivot axis A, B. Only when the scooter turns into a corresponding rolling radius, the driver takes an inclined position proportional to the angular velocity, which points to the center of the curve.

It is further contemplated that the outgoing from the carrier 1 wheel axles 25, 26 in straight travel of the scooter lie in a plane containing the axis CD and perpendicular to the longitudinal center plane CD-EF, and the wheel axles 25, 26 and the support points 16 a, 17 a of Wheels 12a, 12b are in this perpendicular to the longitudinal center plane vertical extending transverse plane. It is expediently provided that the wheel axles 25, 26, 50 of the wheel units 7, 8 located in front of and / or behind the running board 1 are at the same level or preferably above the level of the running board. To limit the angle of rotation, it can be provided that the carrier 1 1 has a pivot bolt 13 fixedly connected to it and / or that the carrier 1 1 is rotatable, preferably about one, on an outgoing from the frame part 3, preferably pivotally connected thereto pivot shaft 13 with a stop limited angular range, is rotatably mounted. To the pivot axis AB, the carrier 11 and / or the pivot shaft 13 rotates, depending on how these parts are stored. The two wheel axles 25, 26 are rotatable about the pivot axis AB as well as the wheels 12a, 12b carried by these. A single wheel axle 25, which carries a wheel unit, that is, two wheels or a roller, is also pivotable about the pivot axis AB.

11 and 12 show a particularly advantageous embodiment of a scooter according to the invention. On the forward and downwardly inclined frame part 3, a pivot shaft 13 is fixed, in particular welded or screwed. The frame part 3 is connected via a frame part 2, in particular pivotable and fixable, connected to the footboard 1 and carries a handlebar 31 with a handle 6. The pivot shaft 13 is downwardly towards the footboard 1, at an angle α aligned and carries a wheel unit 7. The wheel unit 7 comprises two mutually inclined wheels 12a, 12b, as can be seen from Fig. 12. In the end region of the pivot shaft 13, a carrier 11 is rotatably mounted on the pivot shaft 13, which carries the two wheel axles 25 which extend from the carrier 11 to the outside.

As is apparent from Fig. 12, the wheel planes whose tracks are denoted by MN and LK, respectively, make an angle of 2W with each other. It is provided that 10 ° <W <30 °, preferably 15 ° <W <25 °. In particular, it is advantageous if 17 ° <W <23 °. The vertex of the angle W is at the point X.

The angle W is thus formed between a running in the longitudinal direction EF of the scooter vertical center plane and the respective wheel plane MN and KL. The track of the longitudinal vertical plane is labeled CD.

Furthermore, a point 02 is defined by the wheel axles 25 on the carrier 11, namely where the wheel axle 25 penetrates the vertical center plane CD. This point 02 is also on the axis AB of the pivot shaft 13. The angle V of a straight line through the point 02 and the respective contact point of the wheel plane 16a and 17a on the footprint 16 and the vertical center plane is denoted by V and is 30 ° <V < 50 °, preferably 35 ° <V <45 °. These angles V, W are also advantageous for an embodiment of the scooter, as shown in FIGS. 9 and 10. The angle W and the angle V are respectively measured in the vertical center plane containing the contact points 16a, 17a, the point 02, the point X and the wheel axis 25. It is advantageous if the carrier 11 is pivotally fixed on the pivot shaft 3 with a nut 51 screwed onto the threaded end of the pivot shaft 3. Between the carrier 11 and the nut 51, a plastic writing 50 can be used and by tightening or loosening the nut 51, the ease of pivoting of the carrier 11 can be adjusted or changed on the pivot shaft. By these two angles W and V, the geometry of the wheel assembly is determined or specified the distance between the two wheels and their inclination angle to the vertical plane CD. Depending on the wheelbase, wheel diameter and wheel angle these angles vary. It turned out, however, that while maintaining these optimized angles, there is also optimum driving behavior with minimal danger of falling.

It should also be noted that the wheel planes MN, KL are parallel to the longitudinal axis EF of the scooter and extending through the point X intersecting straight line of these two plane is also parallel to the longitudinal axis EF, which in turn is aligned parallel to the footprint 16 of the scooter. This means that the front and rearmost points of the wheels 12a and 12b are equally spaced with respect to the direction of travel.

In a further preferred embodiment, a motor-driven scooter is provided according to the invention, being provided in particular in frame sections 1, 2, 3 accumulators which supply an electric motor, preferably in the form of a wheel hub motor with electrical energy, wherein the power control for the drive expediently is located in the region of the handle 6.

Claims

claims

A scooter with a frame (2, 3) comprising a running board (1) and two wheel units (7, 8), characterized in that the frame (2, 3) has a frame part (3, 2) which projects with respect to the running board (1) to the front and / or to the rear, preferably in the vertical longitudinal center plane of the roller, of which at least one pivot shaft (13) lying in the longitudinal center plane of the roller is supported, which projects away from the frame part (3, 2) at a predetermined angle (a) to the support plane (16) of the roller and has a pivot axis (A, B) for a steerable wheel unit (7, 8) defined and that at least one steerable wheel unit (7, 8) about the pivot axis (A, B) is rotatably arranged so that when tilting the side of the steering column (30) and / or the footboard (1) pivoting the wheel unit (7, 8) with respect to the Längsmitteleb ene takes place.

2. Roller according to claim 1, characterized in that the respective, preferably a pair of wheels carrying (n), wheel axle (s) (25, 26) at a predetermined distance (A) from the pivot axis (A, B) is arranged (are ) and preferably in a direction perpendicular to the pivot axis (13) defined pivot axis (A, B) extending plane about the pivot shaft (13) is pivotable (are).

3. Roller according to claim 1 or 2, characterized in that on the pivot shaft (13) in the plane perpendicular to the pivot axis (A, B) pivotable carrier (11) is mounted or located, which the wheel axle (s) ( 25, 26) or that the respective wheel axle (s) (25, 26) is (are) rotatably mounted on the pivot shaft (13) in the plane perpendicular about the pivot axis (A, B).

4. Roller according to one of claims 1 to 3, characterized in that the frame part (3) inclined downwards and from the running board (1) directed away and from the frame part (3) the pivot axis (A, B) defining pivot shaft ( 13) downwards in the direction of the footboard (1), or that in a further preferred embodiment (FIG. 9) a pivoting shaft projects from the frame part (2) forwardly upwards along the pivot axis AB for receiving the carrier (11).

5. Roller according to one of claims 1 to 4, characterized in that the pivot axis (A, B) and the frame part (3) in an embodiment form an angle of 90 °.

6. Roller according to one of claims 1 to 5, characterized in that the wheel unit (7, 8) has one, preferably two wheels or a roller, carrying wheel axle (s) (25, 26), of the carrier (11). is worn (are).

7. Roller according to one of claims 1 to 6, characterized in that at least one wheel unit (7, 8) two on the (the) wheel axle (s) (25, 26) at a predetermined distance (18) located wheels (12) and the wheel axle (s) (25, 26) is mounted between the wheels (12) on the carrier (11), or that the carrier (11) is formed as a fork which carries the wheel axle (25) between the fork ends at least two wheels or a roller (12) (lie) is and / or that the wheel axle (s) (25, 26) is fixed with its central region on the support (1) or with this area around the Carrier (11) is pivotable or connected thereto.

8. Roller according to one of claims 1 to 7, characterized in that the frame (2, 3) and / or the footboard (1) with respect to the running board (1) upwardly outgoing steering column (30, 31), optionally pivotable and lockable, is attached and / or that the steering column (30, 31), in particular whose upper end has a handle, which is preferably inclined forwardly in the direction of travel and / or that of the steering column (30, 31) or a thereto fixed handlebar or handlebar (6) at least one braking device for at least one wheel unit (7, 8) is worn.

9. Roller according to one of claims 1 to 8, characterized in that the carrier () has a rod-shaped or tubular end part or forms a bearing sleeve (9) and mounted with the end part or the bearing sleeve on the pivot shaft (13) and / or attached to the pivot shaft (13) or plugged into this.

10. Roller according to one of claims 1 to 9, characterized in that the pivot shaft (13) is rod-shaped or comprises a rod-shaped end portion and is received by a rotary bearing or a rotary sleeve (4) in the frame part (3).

11. Roller according to one of claims 1 to 10, characterized in that the wheel axle (s) (25, 26) from the carrier (11) at a distance from the pivot shaft (13) is held (are) and / or that the wheel axle ( n) (25, 26) at the height of the running board (1) is (are) and / or that the wheel axle (s) (25, 26) in front of and / or behind the footboard (1) lying in the direction of travel wheel units ( 7, 8) at the same level or above the Levels of the footboard (1) (lie) and / or that the wheel axle (s) (25, 26) in straight travel of the scooter in the area between the mounting of the pivot shaft (13) on the frame part (3) and the footboard (1 ) (lies) lie.

12. Roller according to one of claims 1 to 11, characterized in that the pivot shaft (13) from the frame part (3) to the rear in the direction of running board (1) goes off and an angle (a) with Aufstandsebene (16) includes, the vertex in Direction footboard (1) points.

13. Roller according to one of claims 1 to 12, characterized in that, in particular at an angle (a) <90 °, when aligning the scooter for straight ahead driving the respective wheel axle (25) is at a higher level than the intersection of the pivot axis ( A, B) with the wheel axis (25) receiving perpendicular to the pivot axis (A, B) extending plane.

14. Scooter according to one of claims 1 to 13, characterized in that a spring unit is provided, which is fastened with its one end on the carrier (11) and with its other end on the frame (2, 3) and the wheel axle (25). or the wheel unit (7, 8) in the direction of travel for a straight ahead aligns or presses.

15. Roller according to one of claims 1 to 14, characterized in that the angle / or the sum of angles (a) of the respective pivot axis (s) (A, B) and / or the respective pivot shaft (s) (13) to the riot plane (16) between 10 ° and 90 °, preferably between 25 and 85 °, in particular between 40 and 80 °, or if two steerable wheel units are provided, then the preferred angular sizes represents the sum of the two pivot axis angle.

16. Roller according to one of claims 1 to 15, characterized in that the frame from the running board (1) to the front outgoing, angularly mutually extending frame parts (2, 3), wherein the footboard (1) further lying frame part (3) the pivot shaft (13) carries and / or that of at least one of these frame parts (2, 3), the steering column (30, 31) is supported.

17. Roller according to one of claims 1 to 16, characterized in that the pivot shaft (13) and the carrier (11) are integrally formed (Figure 6) and the pivot shaft (13) the shape of the frame part (3) and stored around the pivot axis (A, B) rotatable fork carrier (21), wherein the fork region of the fork carrier (21) in the position of use of the scooter when driving straight ahead or at the longitudinal center plane of the scooter symmetrically aligned fork carriage in the direction of the footboard (1) down bent or there bent ends and the wheel axle (25) in the carrier (11 ) serving bent end region, and wherein the wheel axle (25) optionally at the level of the footboard (1) or above it.

18. Scooter according to one of claims 1 to 17, characterized in that in the arrangement of a front and behind the running board (1) arranged and in each case by one of a pivot shaft (13) carried by the carrier (11) carried wheel unit (7, 8) the angle of the pivot axis (A, B) of the front wheel unit (7) with the support plane (16) is greater than the angle of the pivot axis (A, B) of the rear wheel unit (8) with the contact plane (16).

19. Roller according to one of claims 1 to 18, characterized in that the frame part (3) extends at an angle to the footprint inclined and in its end the the frame part (3) extending pivot shaft (13) and on the pivot shaft (13) located carrier (11) bears.

20. Roller according to one of claims 1 to 19, characterized in that the footboard (1) at a level below a line connecting the wheel axle (25) of the front wheel unit (7) with the / the wheel axle (s) (25, 26) the rear wheel unit (8) is located.

21. Roller according to one of claims 1 to 20, characterized in that the pivot angle of the wheel unit (7, 8) and / or the carrier (11) about the respective pivot axis (A, B) and / or with respect to a vertical axis or Axle of the steering column (30) of a limiting unit, eg a stop, is limited.

22. Roller according to one of claims 1 to 23, characterized in that when aligned for straight ahead scooter wheel axle (s) (25,26) is perpendicular to the median plane of the scooter (stand).

23. Roller according to one of claims 1 to 22, characterized in that the wheel unit (17) supporting the wheel axles comprise two wheel axles (25, 26) departing from one on the pivot shaft (13) pivotally mounted carrier (11) and respectively Wear a wheel (12a, 12b).

24. Roller according to one of claims 1 to 23, characterized in that the wheel axle (s) (25, 26) lie in a vertical plane which is perpendicular to the longitudinal direction (EF) of the scooter and / or that the axes (OP / QR ) of the wheel axle (s) (25, 26) with the support plane (16) an angle (W) of 10 ° to 35 °, preferably 15 ° to 25 °, in particular 17 ° to 23 ° include.

25. Roller according to claim 24, characterized in that the support points (16a, 17a) of the wheels (12a, 12b) lie in the vertical plane through the transverse to the direction of travel axis of the carrier (11) and / or the wheel axles (25 , 26).

26. Roller according to one of claims 1 to 25, characterized in that the of the wheel axles (25, 26) carried wheels (12a, 12b) and the wheel planes to each other at an angle of 20 ° to 60 °, preferably 30 ° to 50 °, in particular 34 ° to 46 ° inclined run and the ground remote wheel areas closer to each other than the ground near wheel areas.

27. Roller according to one of claims 1 to 26, characterized in that the carrier (11) on the pivot shaft (13) about the SchwenkwelJe (13) defined pivot axis (A, B) is pivotally mounted or located and the wheel axles ( 25, 26) carries.

28. Roller according to one of claims 24 to 27, characterized in that the carrier (11) outgoing wheel axles (25, 26) are in straight travel of the scooter in a plane containing the axis CD and perpendicular to the longitudinal center plane (CD-EF) stands, wherein the wheel axles (25, 26) and the support points (16a, 17a) of the wheels (12a, 12b) are in this perpendicular to the longitudinal center plane vertical extending transverse plane.

29. Roller according to one of claims 1 to 28, characterized in that the two wheel axles (25,26) carrying carrier (1 1) with the laterally outgoing and in a direction transverse to the longitudinal center plane (CD, EF) level (with track CD) projecting wheel axles (25, 26) via an angle (a) inclined, corresponding to the straight line AB extending bore or an axle bolt, wherein the angle (a) between the longitudinal axis EF and the straight line AB between 10 ° and 90 °, preferably between 30 ° and 80 °, in particular between 40 ° and 70 °.

30. Roller according to one of claims 1 to 29, characterized in that the pivot shaft (13) at its bottom-near end has a screw, which in a further function a frictional (plastic) disc (100) (Figure 11) between the wheel (11) and the pivot shaft (13) presses.

31. Roller according to one of claims 1 to 30, characterized in that the wheel unit (7) has two in the shape of the capital letter A inclined, in the upper region preferably closer Radumfänge having wheels (12a, 12b) on the wheel axles ( 25,25 / 25,26) are rotatably mounted and / or that the two wheels (12a / 12b) of the wheel unit (7, 8) in installation position with their upper edge regions are closer to each other, so that transmitted from the wheel axles via the wheels forces are guided obliquely outwards against the support plane and / or that the wheel axle bolts of the wheels (12a, 12b) of the wheel unit (7) in installation position closer to the vertical longitudinal center plane of the scooter as the support points (16a, 17a) of the wheels (12a, 12b ) on the ground or on the riot level (16).

32. Roller according to one of claims 1 to 31, characterized in that the handlebar (30,31) via a holding part (38) and a cross member / fastening bolt (19) with the frame part (3) and / or running board (1), preferably pivotally connected.

33. Roller according to one of claims 1 to 32, characterized in that the carrier (11) has a bearing sleeve or at least 2 roller bearings, which is mounted on the pivot shaft (13) / are.

34. Roller according to one of claims 1 to 33, characterized in that the carrier (11) has a permanently connected thereto pivot pin (13) and / or that the carrier (11) on one of the frame part (3) outgoing, preferably with these firmly connected pivot shaft (13), rotatable, preferably rotatable about a limited angular range with a stop, is mounted.

35. A scooter according to one of claims 23 to 34, characterized in that the measures provided for wheel mounting Radverschraubungen designed as axle axles (25, 26) of the wheel unit (7) the support points (16a, 17a) of the wheels (12a, 12b) also not exceed the smallest technically mobile radius of curvature.

36. Roller according to one of claims 23 to 35, characterized in that in the arrangement of a front and behind the footboard (1) arranged and in each case by one of a pivot shaft (13) carried by the carrier (11) carried wheel unit (7, 8) the angle of the pivot axis (A, B) of the front wheel unit (7) with the support plane (16) is greater than the angle of the pivot axis (A, B) of the rear wheel unit (8) with the contact plane (16).

37. Roller according to one of claims 1 to 36, characterized in that the pivot shaft (13) from the frame (2, 3) goes up and attached to the frame or frame part (2, 3) or rotatably mounted and on her the footboard (1) remote area of the support (11) is mounted or formed or fixed or that the pivot shaft (13) from the frame (2, 3) down to the frame or frame part (3) rotatably mounted or fixed and on its the Footboard (1) near the area of the support (11) is stored or formed or attached.

38. Roller according to one of claims 1 to 37, characterized in that the angle between the two wheel planes MN and LK, in particular starting from the intersection X XN and XL, which run for example centrally through the wheels 16a and 16b, between 20 ° and 60 ° , preferably between 30 ° and 50 °, in particular 34 ° and 46 °, wherein the vertex X of this acute angle in the line of intersection of these planes, parallel to the direction of travel or to the longitudinal direction EF of the scooter or parallel to the support plane (16) , lies.

39. Roller according to one of claims 1 to 38, characterized in that the geometry of the wheel position is constructively defined by a vector, which is exemplified by the straight line (L, 02) (Figure 12), which in a support point (16a / 7a) of each of the wheels (12a / 2b) begins, and in the intersection 02 of the two axles (25,26) ends, and between the Aufstspunkte (16a, 17a) with the vertical center plane CD in each case an angle V of 30 ° <V <50 °, preferably 35 °. $ V <45 °.

40. Roller according to one of claims 1 to 39, characterized in that in a further preferred embodiment of the scooter in the frame (1, 2, 3) are provided accumulators which supply an electric drive, for example, a wheel hub motor, wherein the actuating device for the Power control of the motor is preferably in the range of the handle piece (6).